Study on Typical Rare Metal Deposits and Metallogenic Regularity in Eastern Heilongjiang
The rare metal mine of Chuangyetun in Huanan County,eastern Heilongjiang Province is locat-ed in Jiamusi block of Xingmongol Cenozoic orogenic belt,and its tectonic location belongs to Mishan-Bao-qing continental margin arc basin-rift basin and Majia arc basin.Recently,36 pegmatite veins have been found in the area,including 5 rare metal ore bodies and 2 rare metal mineralized bodies.The ore-bearing rocks are muscovite quartz-pegmatite,albite pegmatite,spodumene pegmatite,bulk quartz-pegmatite,mostly containing muscovite,albitization,dolomitization and lepidolite.The formation and distribution of ore-bearing pegmatite are affected by many geological factors,among which the activity of ductile shear zone plays a cru-cial role.Pegmatite dike is an intrusion along the direction of the carbonaceous slate schism,and its forma-tion and rare metal-rich characteristics are closely related to the tectonic activity of the ductile shear zone and its interaction with the surrounding strata.
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